Automatic sizing device and method for glass fiber fabric

The invention provides an automatic sizing device and method for a glass fiber fabric, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The automatic sizing device for the glass fiber fabric comprises a machine frame, a driving part, a first sizing storage roller, a second sizing storage roller, a transmission belt and a material passing roller assembly, the first sizing storage roller and the second sizing storage roller are axially and fixedly connected to the two ends of the machine frame respectively and can rotate relative to the machine frame, the driving part is fixedly connected to the machine frame, and the material passing roller assembly is fixedly connected to the driving part. The first slurry storage roller and the second slurry storage roller are sleeved with the transmission belts, the transmission belts are connected with the driving piece, and the multiple transmission belts are evenly distributed in the length direction of the first